Health experts say not to 'vape' around children, because the secondhand aerosol (it isn't vapor) from e cigs isn't safe for them Kentucky Health News ? () Although often promoted as safer than traditional cigarettes, e cigarettes still harm the body in many ways. 1. Health Risks Most vapes contain nicotine, Is Secondhand Vaping Harmful To Your Health? Do electronic cigarettes create thirdhand chemical residue? Thirdhand Smoke Resource Center